Abstract: Carbethoxymethyne (EtOCOc:) has been generated by the short wavelength photolysis of diethylmercury bisdiazoacetate,(N2CC02Et), Hg+ hv+ 2EtOCOC:+ 2N2+ Hg, and its reactions with cyclohexene, cis-2-butene, and trans-2-butene were investigated. The carbyne, formed in its TI ground state, adds to the olefinic x bond in a spin allowed but, according to INDO MO calculations, orbital symmetry forbidden concerted step with ...
[Denmark, Scott E.; Forbes, David C.; Hays, David S.; DePue, Jeffrey S.; Wilde, Richard G. Journal of Organic Chemistry, 1995 , vol. 60, # 5 p. 1391 - 1407]